Please tell me how long it takes for to recover from a major ankle sprain?

Major ankle sprain: If its a chronically sprained ankle with constant pain and instability, it will take longer than a mild outside sprain. Usually 3-4 weeks of rest, icing, antiinflammatory meds (like advil (ibuprofen) or motrin), bracing or compressing wraps, with or without physical therapy should the starting treatment. If pain doesn't subside, you may need imaging or operative treatment. Hope that helped!